<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>页面未找到 - 智慧农业文章中心</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #333;
        }

        .error-container {
            background: white;
            border-radius: 20px;
            padding: 60px 40px;
            text-align: center;
            box-shadow: 0 20px 60px rgba(0,0,0,0.1);
            max-width: 500px;
            width: 90%;
        }

        .error-code {
            font-size: 8rem;
            font-weight: 700;
            background: linear-gradient(135deg, #667eea, #764ba2);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 20px;
            line-height: 1;
        }

        .error-title {
            font-size: 2rem;
            font-weight: 600;
            color: #2c3e50;
            margin-bottom: 15px;
        }

        .error-message {
            font-size: 1.1rem;
            color: #666;
            margin-bottom: 40px;
            line-height: 1.6;
        }

        .action-buttons {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 25px;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            font-size: 1rem;
        }

        .primary-btn {
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
        }

        .primary-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
        }

        .secondary-btn {
            background: #f8f9fa;
            color: #666;
            border: 2px solid #e9ecef;
        }

        .secondary-btn:hover {
            background: #e9ecef;
            color: #333;
        }

        @media (max-width: 480px) {
            .error-container {
                padding: 40px 20px;
            }

            .error-code {
                font-size: 6rem;
            }

            .error-title {
                font-size: 1.5rem;
            }

            .action-buttons {
                flex-direction: column;
            }
        }
    </style>
</head>
<body>
    <div class="error-container">
        <div class="error-code">404</div>
        <h1 class="error-title">页面未找到</h1>
        <p class="error-message">
            抱歉，您访问的页面不存在或已被移动。<br>
            请检查URL是否正确，或返回首页浏览其他内容。
        </p>
        <div class="action-buttons">
            <a href="/articles.html" class="btn primary-btn">
                🏠 返回首页
            </a>
            <button onclick="history.back()" class="btn secondary-btn">
                ← 返回上页
            </button>
        </div>
    </div>
</body>
</html>